White Space vs Images vs Words

Is there a way to measure the White space in an InCopy file in comparison to the amount of space Text takes up and Images take up? This will help my company know if a book has too many images or too much white space or too many words.

For example: The document is considered 100% filled. Perhaps 10% of the document is filled with images, 30% of the file is take up with text / words, and 60% is filled with white space. 10% + 30% + 60% = 100% of the document.

Could all the white pixels be counted and compared to all the colored pixels maybe to determine this ratio?